Sir Ganesh Dutt(a) Singh (13 January 1868 – 26 September 1943) was an Indian lawyer, educationist and administrator during the British Raj. He did much to improve education and health services in the state of Bihar and Orissa before the independence of India from Britain. Dutta made generous donations from his earnings and personal property for the development of educational institutions, Darbhanga Medical College and Hospital, Ayurvedic College and schools for the blind and deaf. A short film based on the life and works of Dutta was made by Prakash Jha.